What information can be obtained from the attitude indicator?

The attitude indicator is a crucial instrument in the cockpit that provides pilots with an understanding of the aircraft's orientation relative to the horizon. Specifically, it indicates whether the wings are level or if the aircraft is climbing, descending, or turning.

By showing the degree of bank, the attitude indicator enables pilots to maintain control of the aircraft during various flight maneuvers. When the aircraft is turned, the indicator displays a visual representation of the bank angle, which is essential for ensuring that the aircraft remains within safe operational limits, especially during turns or when flying in formation.

The other options — altitude, speed, and heading direction — are provided by other instruments in the cockpit. Altitude is indicated by the altimeter, speed is shown on the airspeed indicator, and the heading direction is provided by the magnetic compass or heading indicator. Therefore, the attitude indicator specifically focuses on the aircraft's pitch and roll, making "degree of bank" the correct and relevant information it conveys.